The Effect of Tablet Size on Cognitive Performance Caffeine

• Status: Completed
• Trial end date: 2019-03-01
• Target enrollment: 0
• Participant gender: All

Summary

This study aims to assess if tablet size, due to placebo effect, alters participants' performance on cognitive tests after consuming caffeine. Participants will be randomly assigned to one of four groups: 1) 90 mg caffeine with a 1 mm diameter sucrose pillule; 2) no caffeine with the small sucrose pillule; 3) 90 mg caffeine with a 5 mm sucrose pillule; 4) no caffeine with the large sucrose pillule.

• Phase: Phase 4
• Accepts Healthy Volunteers?: Accepts Healthy Volunteers

Details

• Lead Sponsor: University of Colorado, Denver
• Treatments: Caffeine

Criteria

Inclusion Criteria:

• Fluent in written and spoken English

• Ability to see color

• No uncontrolled high blood pressure

• No allergies to caffeine or sucrose

• No history of heart disease

• No untreated anxiety or depression

• Non-pregnant

• No caffeine consumed the day of participation

Exclusion Criteria:

• Not fluent in written and/or spoken English

• Uncontrolled high blood pressure

• Color-blindness

• Allergies to caffeine and/or sucrose

• History of heart disease

• Untreated anxiety or depression

• Pregnant

• Consumed caffeine on the day of participation